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Exercise

Predict next character

In this exercise, you will code the function to predict the next character given a trained model. You will use the past 20 chars to predict the next one. You will learn how to train the model in the next lesson, as this step is integral before model training.

This is the initial step to create rules for generating sentences, paragraphs, short texts or other blocks of text as needed.

The variables n_vocab, chars_window and the dictionary index_to_char are already loaded in the environment. Also, the functions below are already created for you:

  • initialize_X(): Transforms the text input into a sequence of index numbers with the correct shape.
  • predict_next_char(): Gets the next character using the .predict() method of the model class and the index_to_char dictionary.
Instructions
100 XP
  • Define the function get_next_char() and add the parameters initial_text and chars_window without default values.
  • Use initialize_X() function and pass variable char_to_index to obtain a vector of zeros to be used for prediction.
  • Use the predict_next_char() function to obtain the prediction and store it in the next_char variable.
  • Print the predicted character by applying the defined function on the given initial_text.